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    Glossary›SAM
    Glossary · Metric

    What is Serviceable Available Market (SAM)?

    Definition

    Serviceable Available Market (SAM) is the portion of Total Addressable Market that a company can realistically serve given its product, geography, resources, and competitive position. SAM is typically 5-10 percent of TAM and represents a more realistic growth ceiling in the near to medium term. Understanding SAM helps teams prioritize where to focus sales and marketing investments for maximum impact.

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    Market SizingTAMCompetitive PositionFocus StrategyResource AllocationGrowth PlanningSAM
    In short

    SAM at a glance.

    Realistic market portion company can reach
    Typically 5-10 percent of total TAM
    Accounts for geography, competition, and resources
    Should drive near-term sales and marketing focus

    TAM, SAM, and Execution

    TAM is the dream; SAM is the realistic opportunity; execution is everything. A learning platform might have a 50 billion dollar global corporate training TAM, a 2 billion dollar North American mid-market SAM, and a 200 million dollar near-term serviceable obtainable market (SOM). By grounding strategy in SAM rather than TAM, teams set achievable goals and avoid spreading resources too thin across unrealistic segments.

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    SAM — frequently asked

    Start with TAM, then apply realistic filters: geographic availability (we only sell in North America reduces TAM by 30-40%), competitive advantage (we target mid-market, not enterprise, shrinks TAM by 60%), and scalability (our sales model reaches X customers per year). SAM = TAM minus realistic untapped segments.

    Review SAM annually or when major business shifts occur—new geographic expansion, product repositioning, new competitor entry, or significant customer wins or losses. A SAM that doesn't change suggests either good strategic focus or outdated analysis; compare to actual win rates and growth to determine which.

    Serviceable Obtainable Market (SOM) is similar to SAM but even more conservative, representing the realistic market share you can capture in the near term (1-3 years). Some use SAM and SOM interchangeably, while others ladder them as TAM → SAM → SOM for three levels of refinement.

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